Positive and Negative Feedback of AGN Outflows in NGC 5728

Shin, Jaejin; Woo, Jong-Hak; Chung, Aeree; Baek, Ju Yuel; Cho, Kyuhyoun; Kang, Da Eun; Bae, Hyun‐Jin

doi:10.3847/1538-4357/ab2e72

Cited by 83 publications

(77 citation statements)

References 80 publications

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“…In agreement with the aforementioned simulations, using the greater spatial resolution possible for integral field spectroscopy and mm-inteferometry observations of local galaxies, some evidence for modest positive and negative feedback on small scales has been observed (e.g., Croft et al 2006;Alatalo et al 2015;Cresci et al 2015a;Querejeta et al 2016;Rosario et al 2019;Shin et al 2019;Husemann et al 2019;Perna et al 2020). These effects are out of reach of what can be observed with the lower (i.e., ∼2-5 kpc) resolution and sensitivity of IFU observations of high-redshift galaxies.…”

Section: Implications Of Our Resultssupporting

confidence: 56%

The impact of ionized outflows from z ∼ 2.5 quasars is not through instantaneous in situ quenching: the evidence from ALMA and VLT/SINFONI

Scholtz

Harrison

Rosario

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We present high-resolution (∼2.4 kpc) ALMA band 7 observations (rest-frame λ ∼ 250μm) of three powerful z∼2.5 quasars (Lbol = 1047.3-1047.5 ergs s−1). These targets have previously been reported as showing evidence for suppressed star formation based on cavities in the narrow Hα emission at the location of outflows traced with [O iii] emission. Here we combine the ALMA observations with a re-analysis of the VLT/SINFONI data to map the rest-frame far-infrared emission, Hα emission, and [O iii] emission. In all targets we observe high velocity [O iii] gas (i.e. W80 ∼ 1000–2000 km s−1) across the whole galaxy. We do not identify any Hα emission that is free from contamination from AGN-related processes; however, based on SED analyses, we show that the ALMA data contains a significant dust-obscured star formation component in two out of the three systems. This dust emission is found to be extended over ≈1.5–5.5 kpc in the nuclear regions, overlaps with the previously reported Hα cavities and is co-spatial with the peak in surface brightness of the [O iii] outflows. In summary, within the resolution and sensitivity limits of the data, we do not see any evidence for a instantaneous shut down of in-situ star formation caused directly by the outflows. However, similar to the conclusions of previous studies and based on our measured star formation rates, we do not rule out that the global host galaxy star formation could be suppressed on longer timescales by the cumulative effect of quasar episodes during the growth of these massive black holes.

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Section: Implications Of Our Resultssupporting

confidence: 56%

The impact of ionized outflows from z ∼ 2.5 quasars is not through instantaneous in situ quenching: the evidence from ALMA and VLT/SINFONI

Scholtz

Harrison

Rosario

et al. 2021

Monthly Notices of the Royal Astronomical Society

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“…A similar phenomenon has been reported in other recent works also in galaxies hosting jets lying low onto the galaxy disc (e.g. Shin et al 2019). This suggests that the jets, through the interaction with the gas in the disc, are responsible for generating the observed perpendicular turbulence/outflow.…”

Section: Resultssupporting

confidence: 89%

Turbulence/outflows perpendicular to low-power jets in Seyfert galaxies

et al. 2019

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We present recent results from our MAGNUM survey of nearby active galactic nuclei (AGN), which exploits observations from the optical/near-IR integral field spectrograph MUSE at VLT. We detect strongly enhanced line widths in emission line maps of four galaxies perpendicularly to their low-power jets and AGN ionisation cones, indicative of turbulent/outflowing material. The observation of a similar phenomenon in other works suggests that it originates from an interaction mechanism between the jet and the galaxy disc through which it propagates.

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“…Interestingly, Shimizu et al (2019) reported an elongated velocity dispersion enhancement in the same perpendicular direction and scale in the molecular phase from CO(2-1) as well, whose values are a factor ∼3 lower than in the ionised phase. Durré & Mould (2019) and Shin et al (2019) attributed the high dispersion values perpendicular to outflow and jet as due to beam smearing, causing the line of sight to intersect both the approaching and the receding side of the ionisation-cone bi-polar outflow and thus artificially broadening the line. Shin et al (2019) also mentioned the possibility of an equatorial outflow, making an analogy with the case of NGC 5929 from Riffel et al (2014) (mentioned above), but rejected it because equatorial radio emission is lacking.…”

Section: Observation Of the Phenomenon In Previous Workmentioning

confidence: 99%

“…Durré & Mould (2019) and Shin et al (2019) attributed the high dispersion values perpendicular to outflow and jet as due to beam smearing, causing the line of sight to intersect both the approaching and the receding side of the ionisation-cone bi-polar outflow and thus artificially broadening the line. Shin et al (2019) also mentioned the possibility of an equatorial outflow, making an analogy with the case of NGC 5929 from Riffel et al (2014) (mentioned above), but rejected it because equatorial radio emission is lacking. 2019) mentioned above, they also detected an enhancement in the velocity dispersion of CO(2-1) for the molecular gas in the same direction and on the same scale as that in [O iii], but smaller by a factor of ∼6-8.…”

Section: Observation Of the Phenomenon In Previous Workmentioning

confidence: 99%

MAGNUM survey: Compact jets causing large turmoil in galaxies

Venturi

Cresci

Marconi

et al. 2021

A&A

100

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Context. Outflows accelerated by active galactic nuclei (AGN) are commonly observed in the form of coherent, mildly collimated high-velocity gas directed along the AGN ionisation cones and kinetically powerful (≳1044 − 45 erg s−1) jets. Recent works found that outflows can also be accelerated by low-power (≲1044 erg s−1) jets, and the most recent cosmological simulations indicate that these are the dominant source of feedback on sub-kiloparsec scales, but little is known about their effect on the galaxy host. Aims. We study the relation between radio jets and the distribution and kinematics of the ionised gas in IC 5063, NGC 5643, NGC 1068, and NGC 1386 as part of our survey of nearby Seyfert galaxies called Measuring Active Galactic Nuclei Under MUSE Microscope (MAGNUM). All these objects host a small-scale (≲1 kpc) low-power (≲1044 erg s−1) radio jet that has small inclinations (≲45°) with respect to the galaxy disc. Methods. We employed seeing-limited optical integral field spectroscopic observations from the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope to obtain flux, kinematic, and excitation maps of the extended ionised gas. We compared these maps with archival radio images and in one case, with Chandra X-ray observations. Results. We detect a strong (up to ≳800–1000 km s−1) and extended (≳1 kpc) emission-line velocity spread perpendicular to the direction of the AGN ionisation cones and jets in all four targets. The gas excitation in this region of line-width enhancement is entirely compatible with shock ionisation. These broad and symmetric line profiles are not associated with a single coherent velocity of the gas. A ‘classical’ outflow component with net blueshifted and redshifted motions is also present, but is directed along the ionisation cones and jets. Conclusions. We interpret the observed phenomenon as due to the action of the jets perturbing the gas in the galaxy disc. These intense and extended velocity spreads perpendicular to AGN jets and cones are indeed currently only observed in galaxies hosting a low-power jet whose inclination is sufficiently low with respect to the galaxy disc to impact on and strongly affect its material. In line with cosmological simulations, our results demonstrate that low-power jets are indeed capable of affecting the host galaxy.

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Positive and Negative Feedback of AGN Outflows in NGC 5728

Cited by 83 publications

References 80 publications

The impact of ionized outflows from z ∼ 2.5 quasars is not through instantaneous in situ quenching: the evidence from ALMA and VLT/SINFONI

The impact of ionized outflows from z ∼ 2.5 quasars is not through instantaneous in situ quenching: the evidence from ALMA and VLT/SINFONI

Turbulence/outflows perpendicular to low-power jets in Seyfert galaxies

MAGNUM survey: Compact jets causing large turmoil in galaxies

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